作业帮AS WHEN WHILE
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/09/14 11:49:55
这三个词如何用呢？区别是什么？
解题思路： 连词
解题过程：
when,while,as引导的时间状语从句
▲as表示“当……的时候”，着重强调主句与从句的动作或事情同时或几乎同时发生。
She came up as I was cooking.(同时)
The runners started as the gun went off.(几乎同时)
▲when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。
It was raining when we arrived.(指时间点)
When we were at school, we went to the library every day.(在一段时间内)
When we arrived there,the film had already begun.(先后发生)
▲while意思是“当……的时候”或“在某一段时间里”。主句中的动作或事情在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。在when表示a period of time时，两者可以互换。
Please don’t talk so loud while/when others are working.
He fell asleep while/when reading.
Strike while the iron is hot.( 不可用as或when，这里的while意思是“趁……”)
最终答案：略
解题过程：
when,while,as引导的时间状语从句
▲as表示“当……的时候”，着重强调主句与从句的动作或事情同时或几乎同时发生。
She came up as I was cooking.(同时)
The runners started as the gun went off.(几乎同时)
▲when(at or during the time that )既可以表示在某一点的时候，又可表示在某一段时间内，主句与从句的动作或事情可以同时发生也可以先后发生。
It was raining when we arrived.(指时间点)
When we were at school, we went to the library every day.(在一段时间内)
When we arrived there,the film had already begun.(先后发生)
▲while意思是“当……的时候”或“在某一段时间里”。主句中的动作或事情在从句中的动作或事情的进展过程中发生，从句中的动词一般要用延续性动词。在when表示a period of time时，两者可以互换。
Please don’t talk so loud while/when others are working.
He fell asleep while/when reading.
Strike while the iron is hot.( 不可用as或when，这里的while意思是“趁……”)
最终答案：略